3-(benzylsulfanyl)propanoic acid is primarily utilized in organic synthesis as a versatile intermediate. It serves as a key building block in the preparation of various pharmaceuticals, particularly in the development of compounds with potential therapeutic properties. The benzylsulfanyl group in its structure makes it valuable for creating sulfur-containing molecules, which are often explored for their biological activity. Additionally, it is employed in the synthesis of specialty chemicals and materials, where its unique functional groups enable the formation of complex structures. Its application extends to research settings, where it is used to study reaction mechanisms and develop new synthetic pathways.